They put a lipid coating around the mRNA to protect it. But as soon as that coating is removed, it will be quickly be broken down in the body by various enzymes.
I'm no expert on this but the lipid coating allows it to enter the cell where the coating is removed and the reverse transcription happens. I've read that any of the mRNA that is injected will be gone within 2-3 in the body.
If it can be reverse transcribed then so can Covid which has the same mRNA as the vaccine and way way more. Plus, covid infects a million times more cells than the mRNA vaccine.
